US12025584B2 - Ultrasonic flaw detection device - Google Patents
Ultrasonic flaw detection device Download PDFInfo
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- US12025584B2 US12025584B2 US17/434,087 US202017434087A US12025584B2 US 12025584 B2 US12025584 B2 US 12025584B2 US 202017434087 A US202017434087 A US 202017434087A US 12025584 B2 US12025584 B2 US 12025584B2
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
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- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
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- G—PHYSICS
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- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/48—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by amplitude comparison
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Definitions
- a manual-type ultrasonic flaw detection device in which an examiner manually scans an inspection range of an inspection target while holding an ultrasonic probe in hand and which, at the same time, displays the intensities of ultrasonic echoes on a display.
- the examiner determines whether or not there is a defect in the inspection target from the intensity of an ultrasonic echo indicated on the display and records the results (inspection results) thereof on paper or the like.
- the present disclosure in the manual-type ultrasonic flaw detection device such that the examiner manually scans the inspection range of the inspection target while holding the ultrasonic probe in hand, it is possible to accurately distinguish defects.
- FIG. 1 is a diagram showing an example of a schematic configuration of an ultrasonic flaw detection device of an embodiment.
- FIG. 3 is a diagram showing an identification process of the embodiment.
- FIG. 4 is a diagram showing an example of a display screen displayed on a display by a display control unit of the embodiment.
- FIG. 5 is a diagram showing an example of information stored in a storage unit of the embodiment in a table format.
- FIG. 6 is a flow chart of the ultrasonic flaw detection device of the embodiment.
- An ultrasonic flaw detection device A of this embodiment is used for an ultrasonic flaw detection inspection of an object (inspection target) and detects flaws in the inspection target.
- the ultrasonic flaw detection device A regards a pipe K as the inspection target and detects flaws such as cracks occurring at weld lines of the pipe K.
- the ultrasonic flaw detection device A is a manual-type ultrasonic flaw detection device such that an examiner manually scans an inspection range of the inspection target while holding an ultrasonic probe 2 in hand.
- FIG. 1 is a diagram showing an example of the schematic configuration of the ultrasonic flaw detection device of this embodiment.
- the ultrasonic flaw detection device A includes a sheet material 1 , the ultrasonic probe 2 , an imaging device 3 , an ultrasonic flaw detector 4 and an information-processing device 5 .
- the sheet material 1 may not be only directly attached to the surface of the pipe K but may be attached to the surface of the pipe K in a state where a contact medium for transmitting ultrasonic waves is applied to the surface of the pipe K.
- a contact medium for transmitting ultrasonic waves is applied to the surface of the pipe K.
- the contact medium allows the sheet material 1 to be attached flat (i.e., along a peripheral surface extending in the axial direction and the circumferential direction) even if the surface of the pipe K is uneven.
- the contact medium may be a substance that transmits ultrasonic waves while limiting the attenuation thereof and is, for example, glycerin, water, oil or the like.
- the ultrasonic probe 2 is connected to the ultrasonic flaw detector 4 through a coaxial cable and can be moved on the pipe K (on the outer surface of the pipe K).
- the ultrasonic probe 2 emits ultrasonic waves from a portion thereof and detects the reflected waves of the ultrasonic waves.
- the ultrasonic probe 2 outputs the detected reflected waves (echoes) as waveform data W to the ultrasonic flaw detector 4 .
- the ultrasonic probe 2 scans an inspection range D of the pipe K by ultrasonic waves while being moved on the surface of the pipe K manually by the examiner and detects echoes indicating cracks or the like in the pipe K.
- the ultrasonic probe 2 and the imaging device 3 may be integrated as an inspection probe.
- the configuration of the inspection probe of this embodiment for example, the configuration of an inspection probe shown in PCT International Publication No. WO 2016/098224 can be used.
- the information-processing device 5 of this embodiment is described below. As shown in FIG. 1 , the information-processing device 5 includes a display 11 , an operation unit 12 , a communication I/F section 13 and a control unit 14 .
- the display 11 displays the information from the control unit 14 on its display screen.
- the display 11 is a CRT (Cathode Ray Tube) display or a liquid crystal display and displays various information under the control of the control unit 14 .
- the communication I/F section 13 is connected to the imaging device 3 through a signal cable and receives captured images G of the two-dimensional patterns la captured by the imaging device 3 .
- the communication I/F section 13 A/D-converts the image information of the received captured images G and transmits it to the control unit 14 .
- the processing unit 21 executes an identification process that identifies, for each piece of sampling data, which divided area of the plurality of divided areas 100 a the position of each sampling point of all of the data sets (the sampling data H and the position information) in time series stored in the storage unit 23 in a first process corresponds to.
- the processing unit 21 executes an allocation process that allocates one of the sampling data H to each divided area 100 a based on the identification results of the identification process.
- the processing unit 21 executes an allocation process that allocates one of the sampling data H to each divided area 100 a based on the identification results of the identification process.
- only one of the sampling data H can be allocated to one divided area 100 a.
- the display control unit 22 divides one screen of the display 11 approximately into five screens (first screen 22 a to fifth screen 22 e ).
- the display control unit 22 displays the inspection area 100 divided into the plurality of divided areas 100 a on the first screen 22 a to the third screen 22 c as a trihedral figure of a plan view, a cross-sectional view and a side view in the XYZ coordinate system.
- the display control unit 22 displays, on the first screen 22 a, a view (plan view, i.e., a view viewed in a direction perpendicular to an XZ plane) in which the inspection area 100 divided into the plurality of divided areas 100 a is viewed from the XZ plane.
- plane view i.e., a view viewed in a direction perpendicular to an XZ plane
- the display control unit 22 displays, on the fifth screen 22 e, a play button 30 that causes the fourth screen 22 d to play the waveform data W before and after the waveform data W displayed on the fourth screen 22 d, and a stop button 40 that stops the playback.
- the play button 30 includes a first play button 31 and a second play button 32 .
- the display control unit 22 executes a first playback process in which the waveform data just anterior to the waveform data W displayed on the fourth screen 22 d on the time base is sequentially read and is displayed on the fourth screen 22 d.
- the display control unit 22 executes a second playback process in which the waveform data just posterior to the waveform data W displayed on the fourth screen 22 d on the time base is sequentially read and is displayed on the fourth screen 22 d.
- the stop button 40 is selected by the operation unit 12 , the display control unit 22 stops the first playback process and the second playback process.
- Part (B) of FIG. 5 shows an example of information stored in the second table.
- pieces of information such as a divided area identification number that is a number for identifying each divided area 100 a, the sampling data H allocated to the divided area 100 a indicated by each divided area identification number, and the tag information indicating the waveform data W that is the original data of the sampling data H contained in (corresponding to) the divided area 100 a indicated by this divided area identification number are related and stored.
- the second table is created through the above linking process.
- the tag information of this embodiment is the waveform data number.
- the examiner scans an inspection portion on the pipe K while holding the ultrasonic probe 2 in hand in order to detect defects, such as cracks, and corrosion that occur in the pipe K. For example, the examiner moves the ultrasonic probe 2 in the axial direction to scan from a first end to a second end in the axial direction. Next, when the ultrasonic probe 2 reaches the second end, the examiner shifts the ultrasonic probe 2 in the circumferential direction to a position and makes the ultrasonic probe 2 scan from the position toward the first end in the axial direction. Then, the examiner repeats the above scanning using the ultrasonic probe 2 to scan the entire inspection portion on the pipe K, that is, the entire inspection area 100 .
- the examiner scans while manually moving the ultrasonic probe 2 , and thereby the ultrasonic flaw detector 4 obtains, as the waveform data from the ultrasonic probe 2 , waveform data W 1 , waveform data W 2 , and waveform data W 3 in time series.
- the waveform data W 1 is data when the position information P of the ultrasonic probe 2 is position information P 1 .
- the waveform data W 2 is data when the position information P of the ultrasonic probe 2 is position information P 2 .
- the waveform data W 3 is data when the position information P of the ultrasonic probe 2 is position information P 3 .
- the ultrasonic flaw detector 4 samples the waveform data W 1 at predetermined sampling intervals and transmits sampling data H 11 to H 1 n of this waveform data W 1 to the information-processing device 5 continuously in time series.
- the ultrasonic flaw detector 4 samples the waveform data W 2 at predetermined sampling intervals and transmits sampling data H 21 to H 2 n of this waveform data W 2 to the information-processing device 5 continuously in time series.
- the ultrasonic flaw detector 4 samples the waveform data W 3 at predetermined sampling intervals and transmits sampling data H 31 to H 3 n of this waveform data W 3 to the information-processing device 5 continuously in time series.
- the processing unit 21 relates the sampling data H 31 to H 3 n to the position information P 3 obtained through the reading process at the same time as or in a period of time that can be regarded as the same time as the sampling data H 23 to H 3 n are obtained from the ultrasonic flaw detector 4 and stores them in the first table of the storage unit 23 continuously in time series.
- the processing unit 21 stores pieces of sampling data H obtained by sampling the waveform data W obtained by the ultrasonic probe 2 at predetermined sampling intervals in the storage unit 23 continuously in time series. Each piece of sampling data H is related with the elapsed time T.
- the processing unit 21 identifies which divided area of the plurality of divided areas 100 a the position in the XYZ coordinate system of the sampling point corresponds to for each piece of sampling data H stored in the storage unit 23 .
- the processing unit 21 executes the allocation process to allocate the sampling data H of each sampling point to the divided area 100 a obtained through the identification process to which this sampling data H corresponds (step S 106 ).
- the processing unit 21 compares the two or more pieces of sampling data H with each other and allocates the sampling data having the greatest sampling value thereto.
- the processing unit 21 allocates the sampling data H 11 to the divided area 100 a having a divided area identification number M 1 , allocates the sampling data H 13 to the divided area 100 a having a divided area identification number M 2 , allocates the sampling data H 23 to the divided area 100 a having a divided area identification number M 3 , and allocates the sampling data H 32 to the divided area 100 a having a divided area identification number M 4 .
- the processing unit 21 links the divided area identification number M 1 , the sampling data H 11 , and the waveform data number S 1 of the waveform data W 1 that is the original data of the sampling data H 11 as tag information to each other and stores them in the second table.
- the processing unit 21 links the divided area identification number M 2 , the sampling data H 13 , and the waveform data number S 1 of the waveform data W 1 that is the original data of the sampling data H 13 as tag information to each other and stores them in the second table.
- the processing unit 21 links the divided area identification number M 3 , the sampling data H 23 , and the waveform data number S 2 of the waveform data W 2 that is the original data of the sampling data H 23 as tag information to each other and stores them in the second table.
- the processing unit 21 links the divided area identification number M 4 , the sampling data H 32 , and the waveform data number S 3 of the waveform data W 3 that is the original data of the sampling data H 32 as tag information to each other and stores them in the second table.
- the display control unit 22 fills the divided area 100 a where the scanning by the inspection probe is finished and displays it on the display 11 .
- the display control unit 22 displays the plan view (XZ plane) of the inspection range D divided into the plurality of divided areas 100 a on the display 11 , fills the divided area 100 a to which the sampling data H is allocated and displays it on the display 11 (step S 108 ).
- the processing unit 21 reads, from the first table, all the sampling data (waveform data) related to the waveform data number that is the tag information read from the second table and displays them in the fourth screen 22 d.
- the processing unit 21 reads the waveform data number S 1 as the tag information linked to M 1 from the second table.
- the processing unit 21 reads, from the first table, all of the sampling data H 11 to H 1 n (waveform data W 1 ) related to the waveform data number S 1 read from the second table and displays them in the fourth screen 22 d.
- the processing unit 21 links each of the waveform data W 1 and the waveform data W 3 to this divided area 100 a.
- the processing unit 21 links the divided area identification number M 1 , the waveform data number S 1 of the waveform data W 1 that is the original data of the sampling data H 11 as tag information, and the waveform data number S 3 of the waveform data W 3 that is the original data of the sampling data H 11 as tag information to each other and stores them in the second table.
- the “computer-readable recording medium” may include a medium that dynamically holds a program for a short period of time, such as a communication line for transmitting the program through a network such as the Internet or a telephone line, and a medium that holds a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client in that case.
- the above program may be a program for obtaining part of the above-described functions, may be a program that can obtain the above-described functions in combination with another program recorded in a computer system in advance, or may be a program obtained by using a programmable logic device such as FPGA.
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Abstract
Description
The contact rate R [%]=(1−Na/Ns)×100 (1)
Claims (7)
Applications Claiming Priority (3)
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JP2019-035536 | 2019-02-28 | ||
PCT/JP2020/008478 WO2020175693A1 (en) | 2019-02-28 | 2020-02-28 | Ultrasonic flaw detection device |
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TW (1) | TWI744809B (en) |
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JP7480502B2 (en) * | 2019-12-20 | 2024-05-10 | 株式会社Jvcケンウッド | Recording device, recording method, and program |
WO2023153030A1 (en) * | 2022-02-10 | 2023-08-17 | 株式会社Ihi | Ultrasonic diagnostic device |
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2020
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- 2020-02-28 WO PCT/JP2020/008478 patent/WO2020175693A1/en unknown
- 2020-02-28 US US17/434,087 patent/US12025584B2/en active Active
- 2020-02-28 KR KR1020217029326A patent/KR102619931B1/en active IP Right Grant
- 2020-02-28 EP EP20762371.1A patent/EP3933396B1/en active Active
- 2020-02-28 JP JP2021502659A patent/JP7327464B2/en active Active
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TWI744809B (en) | 2021-11-01 |
KR102619931B1 (en) | 2023-12-29 |
JP7327464B2 (en) | 2023-08-16 |
EP3933396A1 (en) | 2022-01-05 |
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